Means for railway-track extension



I. F. JOY. MEANS FOR RAILWAY TRACK EXTENSION. APPLICATION FILED JULY 23,1920.

1,392,64 Patnted 001:. 4, 1921.

3 SHEETS-SHEET I- 15 g 6) l I ii J. F. JOY.

MEANS FOR RAILWAY TRACK EXTENSION.

APPLICATION FILED JULY 23, 1920- 1 Patented Oct. 4, 1921.

3 SHEETS SHEET 2.

1-. FY. JOY. MEANS FOR RAILWAY TRACK EXTENSION- APPLICATION FILED JULY23, 1,9,20- 1,392,648 Patented Oct. 4, 1921' 3 S HEETS-SHEET 3.

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JOSEPH IE. JOY, OF PITTSBURGH, PENNSYLVANTA.

MEANS FOR RAILWAY-TRACK EXTENSION.

Application filed July 23,

To all whom it may concern:

Be it known that I, JOSEPH F IOY, a citizen of the United StatesofAinerica, residing at Pittsburgh, in the county of Alle= gheny andState of Pennsylvania, have invented certain new and useful Improvementsin Means for Railway-Track Extension, of which thefollowing is aspecification.

This invention relates to certain new and useful improvements in meansfor railway.

track extension and is particularly serviceablein connection with theextension of the light-weight trackage found in coal mines andespecially for extendlng the tracks in mine rooms for any desireddistance less than the length of full length rail sections.

In the mining of coal under the room-andpillar system, the face of thevein is usually undercut for a depth substantially equal to the width ofthe working place, after which the material is blasted and loaded out bymechanical loaders or the like for the depth of such cut. The preferredtypes of loading machines are constructed to run upon rails so that thesame may be readily brought up to within a short distance of the workingface, and in order to accomplish this the rails must be kept extendedclose to the working face as the loading out of the coal proceeds. Asthe length of track extension required after the loading out of each cutis considerably less than the length of full lengthrail sections,speciallength rails must be employed for extending the track. at 0011-siderable expense under present methods. It is the primary object of thepresent invention to employ full length rail sections Y of the standardtype manufactured for thus extending the tracks any desired part of thelength of the rail sections by splicing in a novel manner. n

It is a further object of the present invention to provide meansincluding a novel rail clamp to enable full length rail sections to bethus spliced.

A still further object of the invention is to construct a tie clampvsoas to enable the same to be cheaply and easily manufactured as well asreadilyplaced in use for'the above and other purposes.

Other objects will become apparent as the nature of the invention isbetter'understood,

- and the same consists in the novel form,

combination and arrangement of parts here- Specifieation of LettersPatent.

inafter more fully described, shown in the accompanying drawing andclaimed.

In the drawings, wherein like reference characters indicate similarparts throughout the several views,

Figure 1 is a fragmentary view partly in elevation and partly intransverse vertical section showing my improved clamp associated with apair of rail sections, one of which is shown by dotted lines,

Fig. 2 is substantially a top plan view of the device shown in Fig. 1,

Fig. 3 is a view partly in verticalv section and partly in elevation ofthe rail clamp shown in Figs. 1 and 2, the clamp being shown on an enlared scale,

Fig. 4 is a top plan view of the tie clamp with the nut and set screwremoved,

Fig. 5 isa transverse sectional view taken upon line V-V of Fig. 4:,

Fig. 6 is a somewhat diagrammatic plan View illustrating the manner inwhich the rails are spliced in accordance with the present invention forextending the track a certain distance, and h Fig. 7 is a View similarto Fig. 6 after the rails have been further extended subsequent to theloading out of the cut illustrated in Fig. 6.

Referring more in detail to the several views, the present inventionembodies a tie clamp including a body member '5 of substantially Greekcross form in plan and including alined oppositely extending jaws 6having upwardly inclined lower faces 7 as more clearly shown in Figs. 1and 6. The body of the clamp between the jaws 6 is pro- 'vided withopposite lateral extensions 8 from which depend hook-shaped flanges 9for engagement with the side and underfaces of the bar tie 10 so thatthe clamp may be slid to any position on said tie as desired. The body 5is centrally apertured as at 10 and is provided with a countersunksquared socket ll coincident with and beneath the aperture 10 for snugreception of a nut 12. The nut 12 may be merely fitted in the socket 11or the same may be permanently secured therein by welding or the likeand it will be seen that the nut is effectively prevented from turningrelative to the body 5 by reason of the angular form of the nut and thesocket. A set screw 13 is passed through the aperture 10 and threadedthrough the nut 12 so that its inner end is positioned to bear upon theupper surface of the tie 10, and it will thus be obvious that the clamp,or'anumber of the same, may be slid to the desired position or positionsupon the tie, after which the set screw 13 of each clamp may be threadedinwardly for drawing the lower ends of the hooks 9 tightly against theunder surface of the tie and rigidly fastening the clamp or clamps inposition aga nst displacement, the under surfaces 7 of each clamp beingat such times in engagement with the upper surface of the adjacent baseflange of the rail A1.

When the clamp is used. between two rails as indicated in Fig. 1, theunder surfaces 7 of'both jaws engage a rail base flange so i that thesame is particularly serviceable in splicing rails for track extensionas will V presently become apparent. V 20 a mine room Whose working facew' is undercut as at Z) in the usual manner.

Referring'to Figs. 6 and 7, 1& indicates In Fig. 6, the rails A havebeen extended into the room in end to end relation for full length tothe points cso that the distance between said points c and the workingface is not sufiicient to admit the 7 extension of the tracksv for thedistance of points cZ-.' under the rails at the required points and thefull length of a rail section. As the tracks must be extendedsubstantially to the working face or to the points ,d, it is necessaryto provide some feasible means for employing full length rail sectionsfor this purposeor special length sections must the forward ends of therail sectionsA are clamped in their desired distance apart by the use ofthe clamps 5 hereinbefore described and shown in Figs. 1 to 5 inclusive.As the trackage employed in mines is of very little weight and somewhatflexible,

the rail sections A are then sprung outwardly for a slight distancewhere they.

overlap the switch points 15 and the rails A,

' after which the switch points, the rail sections'A and the rails A arerigidly clamped together'in the relationshown in Fig. 6 by proper use ofthe clamps 5, one clamp 5.

being employed for engaging the base flanges of both the rail sections Aand the rails A at the points --e so as to insure retention of the railsections A in their sprung conditions. 1

When the coal has been mined or loadec out for the depth of the undercutb so as to provide a new working face a-- as shown in Fig. 7, the tracksmust be further their substantially straight form when re-V withtheclamps are then placedunder the "the length of full length railsections.

parting from the spirit and extended. When the rail points. arestaggered, it often happens that one full length rail section A may bevinserted while a splicing in overlappedrelation is necessary againspliced inthe manner shown in Fig.

6 by springing said section A and using a switch point 15, the'railsbeing still rigidly maintained in their proper relation by use 7 of thesame clamps 5 upon the ties 10; As

the springing of the rail sections A does not produce a permanent bend,in the latter, the same will immediately return to leased. i' V v In theuse of the cIampsof the present invention, the desired number. of.clamps are first slid onto each tie 10, and the latter rails in anysuitable manner, such as by jacking'the rails up suiiiciently for thispurpose. The clamps are then placed at their proper relativev positionsand engage with the base flanges of the rails,fl after which the setscrews 13 are manipulated for fas- 'tening the rails in their properrelation. 1

. From the foregoing description, it will be seen that I have providedan extremely practical means for track extension particularlyserviceable in the rooms of coal mines for enabling the useof fulllength rail sectipns even though the length of extension from time, totime is considerable less than It is believed that the construction andoperation as well as the advantages of the presentinvention willbereadily understood and appreciated by those skilled intheiart.

Minor changes may be made without devention as" claimed. 7 7

What is claimedoas new is: 1.- In a means forrailway track extension,

.ai'ail tie clamp comprising a body of substantially Greek cross form inplan and in-. eluding alined oppositely directed Zjaws adapted forengagement 'upon the base flanges of adjacent rails, means for slidablyconnecting the body to a bar tie, said body having an angular sockettherein, a nut fit- 12 0 ted insaid socket, and a set screw'threadedthrough said nut for engagement with the upper surface ofa tie,

2. In a means for railway track extension, a rail'tie clamp comprising abody of substantiallyGreek crossform in plan and including .alinedoppositely directed jaws adapted for engagement upon. the base flangesof adjacent rails, means for slidably connecting the body to a bar tie,said last '130 scope of the in 110 V named means comprising alinedoppositely directed extensions between said jaws provided with dependingopposed hook-shaped flanges, said body having a central aperture andbeing provided with an angular socket coincident with said aperture, anangular nut fitted in said socket, and a set screw threaded through saidnut adapted for engagement with the upper surface of a tie to retain theclamp against movement relative to said tie.

3. In a means for railway track extension, a rail tie clamp comprising abody having alined oppositely directed jaws adapted for engagement uponthe base flanges of adjacent rails, means for slidably connecting thebody to a bar tie, said body having an angular socket therein, a nutfitted in said socket, and a set screw threaded through said nut forengagement with a surface of the tie.

4. In a means for railway track extension, a rail tie clamp comprising abody having alined oppositely directed jaws adapted for engagement uponthe base flanges of ad jacent rails, means for slidably connecting thebody to a bar tie, said last named means including depending opposedhook-shaped flanges rigid with the body, said clamp having an apertureand being provided with an angular socket coincident with said aperture,an angular nut fitted in said socket, and a set screw threaded throughsaid nut adapted for engaging with a surface of the tie to retain theclampv against movement relative to the latter.

5. A rail tie clamp comprising a body having-a jaw adapted forengagement upon the base flange of a rail and provided with means forslidably connecting the same to a bar tie, said clamp having an angularsocket therein, a nut fitted in said socket, and a set screw threadedthrough said nut for engagement with a surface of the tie for holdingthe clamp against sliding movement on the latter."

6. A rail tie clamp comprising a body having a jaw adapted forengagement upon the base flange of a rail and provided with means forslidably connecting the same to a bar tie, said clamp having an angularsocket therein, a nut fitted in said socket, and a set screw threadedthrough said nut for engagement with a surface of the tie for holdingthe clamp against sliding movement on the latter, said means forslidably connecting the clamp to the tie including depending opposedhook-shaped flanges on the body.

-7. A rail tie clamp comprising a body having a jaw adapted forengagement u )on the base flange of a rail, means for slidziblyconnecting the body to a bar tie, said last named means comprisingdepending opposed hook shaped flanges, said body having a centralaperture and being provided with an angular socket coincident with saidaperture, an angular nut fitted in said socket, and a set screw threadedthrough said nut adapted for engagement with the upper surface of a tieto retain the clamp against movement relative to said tie.

8. A rail tie clamp comprising a body having a jaw adapted forengagement upon the base flange of a rail, means for slidably connectingthe body to a bar tie, said body having an angular socket therein, a nutfitted in said socket, and a set screw threaded through said nut adaptedfor engagement with the upper surface of a tie.

In testimony whereof I afiix my signature.

JOSEPH JOY.

